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MC34063AP1G

Public Made by Adom

by adom

onsemi DC-DC Converters, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MC34063AP1G

onsemi · DC-DC Converters · DIP-8

MC34063AP1G from onsemi, in a DIP-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 Switch Collector output Collector of the internal output switch, rated at 40 Vdc maximum switch collector voltage with switch current up to 1.5 A.
2 Switch Emitter passive Emitter of the internal output switch, rated at 40 Vdc maximum switch emitter voltage (VPin 1 = 40 V).
3 Timing Capacitor passive Connection for the timing capacitor CT that sets the oscillator frequency and on/off times.
4 GND power_in Ground reference pin for the device.
5 Comparator Inverting Input input Inverting input of the comparator against the internal 1.25 V reference, with comparator input voltage range of -0.3 V to +40 Vdc.
6 VCC power_in Supply pin; power supply voltage is rated at 40 Vdc maximum, with operation from 3.0 V to 40 V input.
7 Ipk Sense input Current-limit sense input; the current limit sense voltage is 300 mV typical (250 mV to 350 mV).
8 Driver Collector output Collector of the internal driver stage, rated at 40 Vdc maximum driver collector voltage and 100 mA maximum driver collector current.

Key specifications

Parameter Value
Manufacturer onsemi
Package DIP-8
Category Power Management (PMIC)
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Frequency (VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C) fosc 24 33 42 kHz VPin 5 = 0 V, CT = 1.0 nF, TA = 25°C 3
Charge Current Ichg 24 35 42 A VCC = 5.0 V to 40 V, TA = 25°C 3
Discharge Current Idischg 140 220 260 A VCC = 5.0 V to 40 V, TA = 25°C 3
Discharge to Charge Current Ratio Idischg/Ichg 5.2 6.5 7.5 − Pin 7 to VCC, TA = 25°C 3
Current Limit Sense Voltage Vipk(sense) 250 300 350 mV Ichg = Idischg, TA = 25°C 3
Saturation Voltage, Darlington Connection VCE(sat) 1 1.3 V ISW = 1.0 A, Pins 1, 8 connected 3
Saturation Voltage (non-Darlington, Note 6) VCE(sat) 0.45 0.7 V ISW = 1.0 A, RPin 8 = 82 to VCC, Forced beta 20 (symbols lost in extraction) 3
DC Current Gain hFE 50 75 − ISW = 1.0 A, VCE = 5.0 V, TA = 25°C 3
Collector Off-State Current IC(off) 0.01 100 A VCE = 40 V 3
Threshold Voltage (TA = 25°C) Vth 1.225 1.25 1.275 V TA = 25°C 3
Threshold Voltage (over temperature) Vth 1.21 1.29 V TA = Tlow to Thigh 3
Threshold Voltage Line Regulation (MC34063 row) Regline 1.4 5 mV VCC = 3.0 V to 40 V 3
Input Bias Current IIB -20 -400 nA Vin = 0 V 3
Supply Current ICC 4 mA VCC = 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC, VPin 5 > Vth, Pin 2 = GND, remaining pins open 3
Power Supply Voltage VCC 40 Vdc 2
Comparator Input Voltage Range VIR -0.3 40 Vdc 2
Switch Collector Voltage VC(switch) 40 Vdc 2
Switch Emitter Voltage VE(switch) 40 Vdc VPin 1 = 40 V 2
Switch Collector to Emitter Voltage VCE(switch) 40 Vdc 2
Driver Collector Voltage VC(driver) 40 Vdc 2
Driver Collector Current IC(driver) 100 mA 2
Switch Current ISW 1.5 A 2
Storage Temperature Range Tstg -65 150 °C 2
Power Dissipation (P, P1 suffix, PDIP-8) PD 1.25 W TA = 25°C 2
Thermal Resistance Junction-to-Ambient (P, P1 suffix, PDIP-8) RJA 115 °C/W 2
Operating Junction Temperature TJ 150 °C 2
Operating Ambient Temperature Range TA 0 70 °C MC34063A, SC34063A 2
Operation Input Voltage Range (Features) 3 40 V Features bullet: Operation from 3.0 V to 40 V Input 1

CAD (KiCad official)

  • Symbol: MC34063AP1G
  • Footprint: Package_DIP:DIP-8_W7.62mm
  • 3D model: DIP-8 (KiCad packages3D, STEP)
  • 3D model files: mc34063ap1g-etched.step / mc34063ap1g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc34063ap1g.step / mc34063ap1g.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (15 pp, sha256 457d21fce6f3fe98, retrieved 2026-10-14, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF